In the adjacent V-T diagram what is the relation between  ?

(a) ${P}_{2}={P}_{1}$                         (b) ${P}_{2}>{P}_{1}$

(c) ${P}_{2}<{P}_{1}$                         (d) Cannot be predicated

Concept Questions :-

Ideal gas
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The ratio $\frac{{C}_{p}}{{C}_{V}}=\gamma$ for a gas.  Its molecular weight is M. Its specification heat capacity at constant pressure is

(1) $\frac{R}{\gamma -1}$                (2) $\frac{\gamma R}{\gamma -1}$

(3) $\frac{\gamma R}{M\left(\gamma -1\right)}$         (4) $\frac{\gamma RM}{\left(\gamma -1\right)}$

Concept Questions :-

Specific heat
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Difficulty Level:

Which one of the following graph is correct at constant pressure

1.              2.

3.               4.

Concept Questions :-

Ideal gas
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The root-mean-square velocity of the molecules in a sample of helium is $\frac{5}{7}th$ of that of the molecules in a sample of hydrogen.  If the temperature of the hydrogen gas is 0$°$C, that of the helium sample is about:

(1) 0$°$C        (2) 4K         (3) 273$°$C         (4)100$°$C

Concept Questions :-

Types of velocity
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Difficulty Level:

Four molecules have speeds 2 km/sec, 3 km/sec, 4 km/sec and 5 km/sec.  The root mean square speed of these molecules (km/sec) is:

(1) $\sqrt{\frac{54}{4}}$          (2) $\sqrt{\frac{54}{2}}$          (3) 3.5            (4) 3$\sqrt{3}$

Concept Questions :-

Types of velocity
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Difficulty Level:

How many degrees of freedom the gas molecules have if, under STP, the gas density  and the velocity of sound propagation in it is 330 m${s}^{-1}$?

(1) 3       (2) 5           (3) 7              (4) 8

Concept Questions :-

Specific heat
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Difficulty Level:

The kinetic energy of one gram molecule of a gas at normal temperature and pressure is: (R = 8.31 J/mol-K)

[DPMT 1997; Pb. PMT 1997, 2000, 03; AFMC 1998; MH CET 1999]

(1) 0.56                (2)

(3)                   (4)

Concept Questions :-

Kinetic energy of gas
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Difficulty Level:

Gases exert pressure on the walls of containing vessel because  the gas molecules:

(1) Possess momentum

(2) collide with each other

(3) have finite volume

(4) obey gas laws

Concept Questions :-

Kinetic energy of gas
Maxwell distribution curve
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Difficulty Level:

The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will be: (where R is the constant)

(1) PV = 5RT

(2) PV = $\left(\frac{5}{2}\right)RT$

(3) PV = $\left(\frac{5}{16}\right)RT$

(4) PV = $\left(\frac{5}{32}\right)RT$

Concept Questions :-

Ideal gas
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Difficulty Level:

From the P - T graph, what conclusion can be drawn?

(1) ${V}_{2}={V}_{1}$

(2) ${V}_{2}<{V}_{1}$

(3) ${V}_{2}>{V}_{1}$

(4) Nothing can be predicted

Concept Questions :-

Ideal gas